Results 31 to 40 of about 2,738,317 (296)

Towards a Computational Framework for Modeling the Impact of Aortic Coarctations upon Left Ventricular Load [PDF]

Frontiers in Physiology, 9(5), pages 1-20, 2018, 2019
Computational fluid dynamics (CFD) models of blood flow in the left ventricle (LV) and aorta are important tools for analyzing the mechanistic links between myocardial deformation and flow patterns. Typically, the use of image-based kinematic CFD models prevails in applications such as predicting the acute response to interventions which alter LV ...
arxiv   +1 more source

Using pulse oximetry waveforms to detect coarctation of the aorta

BioMedical Engineering OnLine, 2020
Background Coarctation of the aorta is a common form of critical congenital heart disease that remains challenging to diagnose prior to clinical deterioration.
Matthew W. Sorensen, Ismail Sadiq, Gari D. Clifford, Kevin O. Maher, Matthew E. Oster   +4 more
doaj   +1 more source

Machine Learning based Extraction of Boundary Conditions from Doppler Echo Images for Patient Specific Coarctation of the Aorta: Computational Fluid Dynamics Study [PDF]

arXiv, 2022
Purpose- Coarctation of the Aorta (CoA) patient-specific computational fluid dynamics (CFD) studies in resource constrained settings are limited by the available imaging modalities for geometry and velocity data acquisition. Doppler echocardiography has been seen as a suitable velocity acquisition modality due to its higher availability and safety ...
arxiv  

Global Aortic Pulse Wave Velocity is Unchanged in Bicuspid Aortopathy With Normal Valve Function but Elevated in Patients With Aortic Valve Stenosis: Insights From a 4D Flow MRI Study of 597 Subjects

Journal of Magnetic Resonance Imaging, Volume 57, Issue 1, Page 126-136, January 2023., 2023
Background Aortopathy is common with bicuspid aortic valve (BAV), and underlying intrinsic tissue abnormalities are believed causative. Valve‐mediated hemodynamics are altered in BAV and may contribute to aortopathy and its progression. The contribution of intrinsic tissue defects versus altered hemodynamics to aortopathy progression is not known ...
Ethan M.I. Johnson, Michael B. Scott, Kelly Jarvis, Bradley Allen, James Carr, S. Christopher Malaisrie, Patrick McCarthy, Christopher Mehta, Paul W.M. Fedak, Alex J. Barker, Michael Markl   +10 more
wiley   +1 more source

Comparison of 2D and 4D Flow MRI in Neonates Without General Anesthesia

Journal of Magnetic Resonance Imaging, Volume 57, Issue 1, Page 71-82, January 2023., 2023
Background Neonates with critical congenital heart disease require early intervention. Four‐dimensional (4D) flow may facilitate surgical planning and improve outcome, but accuracy and precision in neonates are unknown. Purpose To 1) validate two‐dimensional (2D) and 4D flow MRI in a phantom and investigate the effect of spatial and temporal resolution;
Pia Sjöberg, Erik Hedström, Katrin Fricke, Petter Frieberg, Constance G Weismann, Petru Liuba, Marcus Carlsson, Johannes Töger   +7 more
wiley   +1 more source

Left ventricular mechanical function and aortic elastic properties in newborns with aortic coarctation. Prognostic significance of obtained data

Патология кровообращения и кардиохирургия, 2019
Coarctation of the aorta is one of the most common congenital heart defects. Despite excellent early results of correcting isolated coarctation of the aorta in the neonatal period, in the long-term postoperative period such patients have an increased ...
Y. S. Sinelnikov, E. N. Orekhova, T. V. Matanovskaya   +2 more
doaj   +1 more source

Classification of Pressure Gradient of Human Common Carotid Artery and Ascending Aorta on the Basis of Age and Gender [PDF]

International Journal of computer Applications, Volume 145, No.1, July 2016, 2017
The current work is done to see which artery has more chance of having cardiovascular diseases by measuring value of pressure gradient in the common carotid artery (CCA) and ascending aorta according to age and gender. Pressure gradient is determined in the CCA and ascending aorta of presumed healthy volunteers, having age between 10 and 60 years.
arxiv   +1 more source

Automatic Segmentation of Thoracic Aorta Segments in Low-Dose Chest CT [PDF]

SPIE Medical Imaging, 2018, vol. 10574, pp. 105741S, 2018
Morphological analysis and identification of pathologies in the aorta are important for cardiovascular diagnosis and risk assessment in patients. Manual annotation is time-consuming and cumbersome in CT scans acquired without contrast enhancement and with low radiation dose.
arxiv   +1 more source

Native aortic coarctation in neonates and infants: Immediate and midterm outcomes with balloon angioplasty and surgery

Annals of Pediatric Cardiology, 2018
Background: Native aortic coarctation in young infants can be treated surgically or with balloon angioplasty, although the latter approach remains controversial.
Supratim Sen, Sandeep Garg, Suresh G Rao, Snehal Kulkarni   +3 more
doaj   +1 more source

Significant infrarenal aortic stenosis in pregnancy: a case report

Journal of Medical Case Reports, 2019
Background Hypertension is common in pregnant women presenting with aortic coarctation or Takayasu’s arteritis. Uncontrolled hypertension leads to increased adverse maternal and neonatal events. Case presentation A 36-year-old gravida 2, para 1 Caucasian
Edmund Yin Man Chung, Anushree Tiku, Sean Seeho, Amanda Mather   +3 more
doaj   +1 more source